H3C Technologies H3C WX3000 Series Unified Switches - Manual (Page 211)

22-42
To do… Use the command… Remarks
Enter system view system-view —
Enter Ethernet port view
interface interface-type
interface-number
—
Enable the rapid transition feature stp no-agreement-check
Required
By default, the rapid transition
feature is disabled on a port.
z
The rapid transition feature can be enabled on only root ports or alternate ports.
z
If you configure the rapid transition feature on a designated port, the feature does not take effect on
the port.
Configuring VLAN-VPN Tunnel
Introduction
The VLAN-VPN Tunnel function enables STP packets to be transparently transmitted between
geographically dispersed user networks through specified VLAN VPNs in operator’s networks, through
which spanning trees can be generated across these user networks and are independent of those of the
operator’s network.
As shown in Figure 22-9 , the upper part is the operator’s network, and the lower part is the user’s
network. The operator’s network comprises packet ingress/egress devices, and the user’s network has
networks A and B. On the operator’s network, configure the arriving STP packets at the ingress to have
MAC addresses in a special format, and reconvert them back to their original formats at the egress. This
is how transparent transmission is implemented over the operator’s network.
Figure 22-9 VLAN-VPN tunnel network hierarchy